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资源说明：art project 4 vibes room
Dynamic Sound
=============
1. `init`
* capture from cam
* play 4 sounds
2. `while 1`
* query frame (from cam)
* sub: image(t) - image(t-10) = moved
* weight each 4 quart of the frame (0.0 < weight < 1.0)
* moved / 4 quarter images -> sum each quarter px -> % -> volume
* apply weight as channel volume
[](http://youtube.com/embed/KJYo7oxTgus?rel=0)
`sudo apt-get install python-opencv python-pygame`
* http://opencv.willowgarage.com/documentation/python/reading_and_writing_images_and_video.html#capturefromcam
* http://opencv.willowgarage.com/documentation/python/reading_and_writing_images_and_video.html#queryframe
* http://opencv.willowgarage.com/documentation/python/video_motion_analysis_and_object_tracking.html#calcopticalflowlk
* http://opencv.willowgarage.com/documentation/python/core_operations_on_arrays.html#sub
* http://pygame.org/docs/ref/mixer.html#Channel.set_volume
* http://en.wikipedia.org/wiki/Surround_sound
* http://en.wikipedia.org/wiki/DVD-Audio
* http://en.wikipedia.org/wiki/Category:Albums_in_5.1
* http://wiki.python.org/moin/PythonInMusic
* http://www.libsdl.org/projects/SDL_mixer/
* https://www.google.com/search?q=python+site:libsdl.org
* http://connect.creativelabs.com/openal
* https://www.google.com/search?q=python+site:opensource.creative.com%2Fpipermail%2Fopenal
* libsdl ? ossaudiodev.openmixer ? ncurses
* http://en.store.creative.com/sound-blaster/sound-blaster-x-fi-surround-5-1-pro/1-20055.aspx
* http://usa.yamaha.com/products/audio-visual/av-receivers-amps/rx
* http://hg.pygame.org/pygame/src/d1cbb8c9d94b/test/playwave.py#cl-181
* http://hg.pygame.org/pygame/src/9c6aa550da25/doc/src/openal_constants.rst#cl-69
* https://bitbucket.org/pygame/pygame/issue/113
* http://crystalspace3d.org "3D sounds" !
* http://pysonic.sourceforge.net ! (based on closed src lib :/ )
* http://fmod.org/products/fmodex.html
* https://www.google.com/search?q=3d+sound+python
* http://cgit.freedesktop.org/gstreamer/gst-python
* https://github.com/christhompson/sound_fall
* http://code.google.com/p/pyglet/
* http://pyglet.org/doc/programming_guide/positional_audio.html
* http://pyglet.org/doc/api/pyglet.media.Player-class.html#position
---
API usage: `0.0` < `weight` < `1.0`
-----------------------------------
DynamicSound.weight = {
"up": {
"left": 0,
"right": 0
},
"down": {
"left": 0,
"right": 0
}
}
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